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| Mirrors > Home > ILE Home > Th. List > gsumsnfdcmn | GIF version | ||
| Description: Group sum of a singleton, deduction form, using bound-variable hypotheses instead of distinct variable conditions. (Contributed by Mario Carneiro, 19-Dec-2014.) (Revised by Thierry Arnoux, 28-Mar-2018.) (Revised by AV, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| gsumsnd.b | ⊢ 𝐵 = (Base‘𝐺) |
| gsumsndcmn.g | ⊢ (𝜑 → 𝐺 ∈ CMnd) |
| gsumsnd.m | ⊢ (𝜑 → 𝑀 ∈ 𝑉) |
| gsumsnd.c | ⊢ (𝜑 → 𝐶 ∈ 𝐵) |
| gsumsnd.s | ⊢ ((𝜑 ∧ 𝑘 = 𝑀) → 𝐴 = 𝐶) |
| gsumsnfd.p | ⊢ Ⅎ𝑘𝜑 |
| gsumsnfd.c | ⊢ Ⅎ𝑘𝐶 |
| Ref | Expression |
|---|---|
| gsumsnfdcmn | ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐴)) = 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | gsumsnd.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
| 2 | eqid 2238 | . . 3 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 3 | gsumsndcmn.g | . . 3 ⊢ (𝜑 → 𝐺 ∈ CMnd) | |
| 4 | gsumsnfd.p | . . . . . . . 8 ⊢ Ⅎ𝑘𝜑 | |
| 5 | elsni 3727 | . . . . . . . . 9 ⊢ (𝑘 ∈ {𝑀} → 𝑘 = 𝑀) | |
| 6 | gsumsnd.s | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 = 𝑀) → 𝐴 = 𝐶) | |
| 7 | 6 | ex 115 | . . . . . . . . 9 ⊢ (𝜑 → (𝑘 = 𝑀 → 𝐴 = 𝐶)) |
| 8 | 5, 7 | syl5 32 | . . . . . . . 8 ⊢ (𝜑 → (𝑘 ∈ {𝑀} → 𝐴 = 𝐶)) |
| 9 | 4, 8 | ralrimi 2621 | . . . . . . 7 ⊢ (𝜑 → ∀𝑘 ∈ {𝑀}𝐴 = 𝐶) |
| 10 | nfcsb1v 3180 | . . . . . . . . 9 ⊢ Ⅎ𝑘⦋𝑞 / 𝑘⦌𝐴 | |
| 11 | gsumsnfd.c | . . . . . . . . 9 ⊢ Ⅎ𝑘𝐶 | |
| 12 | 10, 11 | nfeq 2400 | . . . . . . . 8 ⊢ Ⅎ𝑘⦋𝑞 / 𝑘⦌𝐴 = 𝐶 |
| 13 | csbeq1a 3156 | . . . . . . . . 9 ⊢ (𝑘 = 𝑞 → 𝐴 = ⦋𝑞 / 𝑘⦌𝐴) | |
| 14 | 13 | eqeq1d 2247 | . . . . . . . 8 ⊢ (𝑘 = 𝑞 → (𝐴 = 𝐶 ↔ ⦋𝑞 / 𝑘⦌𝐴 = 𝐶)) |
| 15 | 12, 14 | rspc 2923 | . . . . . . 7 ⊢ (𝑞 ∈ {𝑀} → (∀𝑘 ∈ {𝑀}𝐴 = 𝐶 → ⦋𝑞 / 𝑘⦌𝐴 = 𝐶)) |
| 16 | 9, 15 | mpan9 281 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑞 ∈ {𝑀}) → ⦋𝑞 / 𝑘⦌𝐴 = 𝐶) |
| 17 | gsumsnd.c | . . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ 𝐵) | |
| 18 | 17 | adantr 276 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑞 ∈ {𝑀}) → 𝐶 ∈ 𝐵) |
| 19 | 16, 18 | eqeltrd 2315 | . . . . 5 ⊢ ((𝜑 ∧ 𝑞 ∈ {𝑀}) → ⦋𝑞 / 𝑘⦌𝐴 ∈ 𝐵) |
| 20 | nfcv 2392 | . . . . . 6 ⊢ Ⅎ𝑞𝐴 | |
| 21 | 20, 10, 13 | cbvmpt 4228 | . . . . 5 ⊢ (𝑘 ∈ {𝑀} ↦ 𝐴) = (𝑞 ∈ {𝑀} ↦ ⦋𝑞 / 𝑘⦌𝐴) |
| 22 | 19, 21 | fmptd 5865 | . . . 4 ⊢ (𝜑 → (𝑘 ∈ {𝑀} ↦ 𝐴):{𝑀}⟶𝐵) |
| 23 | uncom 3373 | . . . . . 6 ⊢ (∅ ∪ {𝑀}) = ({𝑀} ∪ ∅) | |
| 24 | un0 3556 | . . . . . 6 ⊢ ({𝑀} ∪ ∅) = {𝑀} | |
| 25 | 23, 24 | eqtri 2259 | . . . . 5 ⊢ (∅ ∪ {𝑀}) = {𝑀} |
| 26 | 25 | feq2i 5530 | . . . 4 ⊢ ((𝑘 ∈ {𝑀} ↦ 𝐴):(∅ ∪ {𝑀})⟶𝐵 ↔ (𝑘 ∈ {𝑀} ↦ 𝐴):{𝑀}⟶𝐵) |
| 27 | 22, 26 | sylibr 134 | . . 3 ⊢ (𝜑 → (𝑘 ∈ {𝑀} ↦ 𝐴):(∅ ∪ {𝑀})⟶𝐵) |
| 28 | 0fi 7192 | . . . 4 ⊢ ∅ ∈ Fin | |
| 29 | 28 | a1i 9 | . . 3 ⊢ (𝜑 → ∅ ∈ Fin) |
| 30 | gsumsnd.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ 𝑉) | |
| 31 | noel 3525 | . . . 4 ⊢ ¬ 𝑀 ∈ ∅ | |
| 32 | 31 | a1i 9 | . . 3 ⊢ (𝜑 → ¬ 𝑀 ∈ ∅) |
| 33 | 1, 2, 3, 27, 29, 30, 32 | gsump1 14247 | . 2 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐴)) = ((𝐺 Σg ((𝑘 ∈ {𝑀} ↦ 𝐴) ↾ ∅))(+g‘𝐺)((𝑘 ∈ {𝑀} ↦ 𝐴)‘𝑀))) |
| 34 | res0 5069 | . . . . 5 ⊢ ((𝑘 ∈ {𝑀} ↦ 𝐴) ↾ ∅) = ∅ | |
| 35 | 34 | oveq2i 6099 | . . . 4 ⊢ (𝐺 Σg ((𝑘 ∈ {𝑀} ↦ 𝐴) ↾ ∅)) = (𝐺 Σg ∅) |
| 36 | gsum0cmn 14244 | . . . . 5 ⊢ (𝐺 ∈ CMnd → (𝐺 Σg ∅) = (0g‘𝐺)) | |
| 37 | 3, 36 | syl 14 | . . . 4 ⊢ (𝜑 → (𝐺 Σg ∅) = (0g‘𝐺)) |
| 38 | 35, 37 | eqtrid 2283 | . . 3 ⊢ (𝜑 → (𝐺 Σg ((𝑘 ∈ {𝑀} ↦ 𝐴) ↾ ∅)) = (0g‘𝐺)) |
| 39 | nfv 1581 | . . . . . 6 ⊢ Ⅎ𝑘 𝑞 = 𝑀 | |
| 40 | 4, 39 | nfan 1618 | . . . . 5 ⊢ Ⅎ𝑘(𝜑 ∧ 𝑞 = 𝑀) |
| 41 | 11 | a1i 9 | . . . . 5 ⊢ ((𝜑 ∧ 𝑞 = 𝑀) → Ⅎ𝑘𝐶) |
| 42 | vex 2824 | . . . . . 6 ⊢ 𝑞 ∈ V | |
| 43 | 42 | a1i 9 | . . . . 5 ⊢ ((𝜑 ∧ 𝑞 = 𝑀) → 𝑞 ∈ V) |
| 44 | simpll 531 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑞 = 𝑀) ∧ 𝑘 = 𝑞) → 𝜑) | |
| 45 | simpr 110 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑞 = 𝑀) ∧ 𝑘 = 𝑞) → 𝑘 = 𝑞) | |
| 46 | simplr 533 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑞 = 𝑀) ∧ 𝑘 = 𝑞) → 𝑞 = 𝑀) | |
| 47 | 45, 46 | eqtrd 2271 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑞 = 𝑀) ∧ 𝑘 = 𝑞) → 𝑘 = 𝑀) |
| 48 | 44, 47, 6 | syl2anc 415 | . . . . 5 ⊢ (((𝜑 ∧ 𝑞 = 𝑀) ∧ 𝑘 = 𝑞) → 𝐴 = 𝐶) |
| 49 | 40, 41, 43, 48 | csbiedf 3188 | . . . 4 ⊢ ((𝜑 ∧ 𝑞 = 𝑀) → ⦋𝑞 / 𝑘⦌𝐴 = 𝐶) |
| 50 | snidg 3738 | . . . . 5 ⊢ (𝑀 ∈ 𝑉 → 𝑀 ∈ {𝑀}) | |
| 51 | 30, 50 | syl 14 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ {𝑀}) |
| 52 | 21, 49, 51, 17 | fvmptd2 5790 | . . 3 ⊢ (𝜑 → ((𝑘 ∈ {𝑀} ↦ 𝐴)‘𝑀) = 𝐶) |
| 53 | 38, 52 | oveq12d 6106 | . 2 ⊢ (𝜑 → ((𝐺 Σg ((𝑘 ∈ {𝑀} ↦ 𝐴) ↾ ∅))(+g‘𝐺)((𝑘 ∈ {𝑀} ↦ 𝐴)‘𝑀)) = ((0g‘𝐺)(+g‘𝐺)𝐶)) |
| 54 | 3 | cmnmndd 14201 | . . 3 ⊢ (𝜑 → 𝐺 ∈ Mnd) |
| 55 | eqid 2238 | . . . 4 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
| 56 | 1, 2, 55 | mndlid 13807 | . . 3 ⊢ ((𝐺 ∈ Mnd ∧ 𝐶 ∈ 𝐵) → ((0g‘𝐺)(+g‘𝐺)𝐶) = 𝐶) |
| 57 | 54, 17, 56 | syl2anc 415 | . 2 ⊢ (𝜑 → ((0g‘𝐺)(+g‘𝐺)𝐶) = 𝐶) |
| 58 | 33, 53, 57 | 3eqtrd 2275 | 1 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐴)) = 𝐶) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 104 = wceq 1402 Ⅎwnf 1513 ∈ wcel 2209 Ⅎwnfc 2379 ∀wral 2528 Vcvv 2821 ⦋csb 3147 ∪ cun 3218 ∅c0 3520 {csn 3709 ↦ cmpt 4193 ↾ cres 4778 ⟶wf 5376 ‘cfv 5380 (class class class)co 6088 Fincfn 7026 Basecbs 13410 +gcplusg 13490 0gc0g 13669 Mndcmnd 13788 CMndccmn 14177 Σg cgsu 14240 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4248 ax-sep 4251 ax-nul 4261 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-iinf 4737 ax-cnex 8276 ax-resscn 8277 ax-1cn 8278 ax-1re 8279 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-mulrcl 8284 ax-addcom 8285 ax-mulcom 8286 ax-addass 8287 ax-mulass 8288 ax-distr 8289 ax-i2m1 8290 ax-0lt1 8291 ax-1rid 8292 ax-0id 8293 ax-rnegex 8294 ax-precex 8295 ax-cnre 8296 ax-pre-ltirr 8297 ax-pre-ltwlin 8298 ax-pre-lttrn 8299 ax-pre-apti 8300 ax-pre-ltadd 8301 ax-pre-mulgt0 8302 |
| This proof depends on definitions: df-bi 117 df-stab 843 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-if 3639 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-tr 4232 df-id 4440 df-iord 4513 df-on 4515 df-ilim 4516 df-suc 4518 df-iom 4740 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-recs 6580 df-irdg 6645 df-frec 6666 df-1o 6691 df-oadd 6695 df-er 6811 df-en 7027 df-dom 7028 df-fin 7029 df-pnf 8368 df-mnf 8369 df-xr 8370 df-ltxr 8371 df-le 8372 df-sub 8506 df-neg 8507 df-reap 8911 df-ap 8918 df-inn 9314 df-2 9372 df-n0 9575 df-z 9656 df-uz 9938 df-fz 10429 df-fzo 10567 df-seqfrec 10906 df-ihash 11237 df-ndx 13413 df-slot 13414 df-base 13416 df-plusg 13503 df-0g 13671 df-gzsum 13672 df-mgm 13735 df-sgrp 13776 df-mnd 13789 df-minusg 13868 df-mulg 13982 df-cmn 14179 df-gsumfi 14241 |
| This theorem is used by: gsumsndcmn 14258 gsumunsnfd 14259 |
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